Method and device for detecting a web break of a fibrous web, industrial plant and computer program product

A method for monitoring and controlling an industrial plant for reducing a risk of a web break of a fibrous material web, wherein the industrial plant serves for producing and/or processing the fibrous material web, wherein the industrial plant comprises a first part configured as a wet part, and a second part configured as a dry section, wherein the method comprises:

• operating at least one of sensors and encoders to determine first parameters of the first part and to determine second parameters of the second part,
• storing the first parameters and/or the second parameters in at least one of a data memory and cloud storage as a function of time,
• analyzing the first and second parameters by a processing unit to determine anomalies that lead to web breaks based on deviations of the parameters beyond a tolerance and/or changes in the parameters as a function of time,
• wherein the second parameters are analyzed first for second anomalies and
• when a second anomaly is determined, a controller sends signals to adapt the second parameters to reduce the risk of the web break;
• when no second anomaly is determined, but a first anomaly is determined, the first anomaly is displayed to a user and the controller sends signals to adapt the first parameters and/or the second parameters to reduce the risk of the web break;
• wherein adapting the first parameters comprises increasing/decreasing the first parameters comprising at least one of a temperature of the fibrous material web, a concentration of fibers in the fibrous material web, and a pH value of the fibrous material web,
• wherein adapting the second parameters comprises increasing/decreasing the second parameters comprising at least one of rotational speeds and torques of a respective drive in the dry section, and a web tension between two rollers.